Heavy duty caster



March 26, 19.35. w. H. slPPEL 1,995,823

HEAVY DUTY CASTER Filed June 23, 1950 Fl. l1 l Fnl 2+ INVENTOR.

l WMU/7N H. .S/FPEL.

- ATTORNEY.

Patented Mar. 26, 1935 i 1,995,823

UNETED vSTATES PATENT OFFICE 1,995,823 y n HEAVY DUTY CASTER William H.Sippel, South Bend, Ind. Application .rune 23, 1939, serial No. 463,049

4 claims. (c1. 16-21) This invention relates to a caster construction at33 and in this form of the invention the same particularly adaptable forextremely heavy duty. is threaded and the plate 26 is adapted to be Thechief object ofthe invention is to provide supported by driving theupwardly extending aV heavy duty caster and construct the same fromportion 35 secured thereto and herein shown in- 5 relatively standardparts and in an economical tegral therewith into'a tubular member ofsimilar 5 manner. outline. This may be a drive fit or friction en- Thefull nature of the invention will be undergagement, or the tubularmember may be secured stood from the accompanying drawing and thethereto through a bolt .passing through the same following descriptionand claims: and being receivable by the transversely extend- In the`drawing Fig. 1 is. a front elevation of a ing threaded opening 34. Alsoif a solid leg is to l0 caster construction adapted for insertion into abe supported the same may be threaded and tubular support, parts beingbroken away to show receivable by the threaded opening 33 and anthe samein quarter section and other parts in chored in position by a set screwmounted in detail. Fig. 2 is a similar View oi a modied threaded opening34.

form of the invention wherein a tubular support In Figs. 2 and 3 of thedrawing modified forms 15` is illustrated which is adapted fortelescopic assoof the invention are illustrated. The yoke and ciationfor mounting the caster upon a supportcaster wheel construction isidentical. The suping member. Fig. 3 isa side elevation of the portingplate and anchorage construction, howcaster shown in Fig.Y 2 but with anangle iron ever, is dilerent and also the pivotal connection typesupporting member for mounting upon an is different. In Fig. 2 thesupporting plate 126 20 angle iron leg or a square leg as desired. hasthe central recess 132 which is enlarged by Fig. 4 is an elevation Viewof a modified form iiaring or counter sinking the same as at 133 of yokeand plate connection, parts being broken to receivethe tapered head 123of the bolt 122. away in quarter section through the supporting Thespacing bushing or cone 121, washer 124 and plate and pintle. nut 125herein are all shown integral and have 25 In the drawing l0 indicates ayoke which cona threadedengagement with the bolt 122. The stitutes aheavy standard steel bar. The ends washer extending portion 124 of theaforesaid thereof areturned angularly as at 11 and thence cone at itsjunction with the sleeve portion 121, inwardly as at 12 towards eachother, and thence the same being indicated at 150, constitutes a 3Uangularly thereof as at 13 to form a fork having ball race forantifriction members 151. A stepped 30 a pair of spaced parallel earseach end being collar 152 forms a relatively closed chamber withapertured at le to receive the axle or bolt 15 the spacing constructionpreviously mentioned which mounts a caster wheel 16. I f desired the andretains the balls therein, said spacing collar anti-friction rollers 17and the side washers 18 being receivable by the chamber aperture 120 inmay be added. Lubrication may be obtained for the y0ke- 35 the l'OllerSas at 19 if desired- Suitably secured as at 127 is the cup shaped Onefeature of the inventionconsists in the plate 12g forming a. track plateand guard for formation 0f a yoke for a heavy duty Casier by theanu-friction balls 129 retained in position forming the Same 0f a heavyStandard- Steel bar* by the retainer 30. The balls 129 in the present i0The Central portion 10 of the yoke is apertured instance bear upon atrack plate 131, interposed as at 20 and positionable therein is aspacing t n il bushing 2l which has threaded engagement with b Wan nesupportmg plate 126 and the Cup 128. suitably secured to the supportingplate the bolt 22. Bolt 22 has the enlarged or headed portion 23 and atits opposite end supports a 126 as by Welding gft 134 1S a tube 135Whlch 1S l5 washer 24 and a nut 25. The bushing maintains adapted totelescoplcauy mount th? Caster upon 45 a supporting plate 26 in spacedrelation to the a leg of Complemntary conformatlonsyoke 10.' Suitablysecured as indicated at 27 by when the Caster 1S to be mountedupona'square welding or the like is a cup 28 forming a track angular or.channel leg the form shown in Fig. plate upon the yoke and c, guardf0.1- the anti- 3 is employed and the same includes the supportfrictionelements 29 in the form of balls mainlg plate 226 t0 WhCh iS Secured aslat 234: the 50 tained in spaced relation by the ball retainer 30. SClOIlOf angle 11'01'1 235 apeltul'ed aS al? 236 fOr The balls engage thelower surface 3l of the transverse connection to the leg or otherstrucplate 26. ture to be supported by the caster. Angle 235 is As shownin Fig. l supporting plate 26 is aperpreferably welded to the plate.tured as at 32 and the aperture is enlarged as Fig. 4 illustrates asimple plate anchorage type 55 caster and in this form similar partsbear similar numerals of the three hundred series.

In this form certain features illustrated in Figs. 1 and 2 are combinedand certain other features are modified. The conical head 323 of bolt322 and plate 331 of the form shown in Fig. 2, are combined with thesingle ball series 329 of Fig. l. The threaded sleeve 321 and portion320 are herein illustrated as separable instead of being integral asillustrated in Fig. 2`

The invention claimed is:

1. In a heavy duty caster, the combination of an apertured loadsupporting member, a centrally apertured plate member therebeneath, ametal plate member therebeneath and in spaced relation thereto, one ofsaid members having a peripheral flange concentrically arranged anddirected toward the other member, anti-friction means between the platemembers and retained by the iiange, a yoke including a fiat centralportion centrally apertured and suitably secured to the lowermost platemember, a spacing sleeve between the load supporting member and theyoke, and pintle means positioned in the aperture of the load supportingmember and in the sleeve for swivablyfsecuring the load and supportingmember together with the antifriction means included therebetween.

2. In a swivel caster the combination of a yoke comprising a bar havinga flat midportion and an aperture therein, a centrally apertured metalcup peripherally and permanently secured to the midportion forming aball engaging and retaining arrangement, an apertured load supportingmember, a centrally apertured metal plate therebeneath, spacing meansinterposed between the bar midportion and the plate, ball meansinterposed between the cup and the plate, and pintle means for swivablysecuring the bar midportion to the load supporting member and mounted inthe respective and aligned apertures thereof.

3. In a swivel caster the combination of a yoke comprising a bar havinga at midportion and an aperture therein, a centrally apertured metal cupperipherally and permanently secured to the midportion forming a ballengaging and retaining arrangement, an aperture load supporting member,a centrally apertured metal plate therebeneath, spacing means interposedbetween the bar midportion and the plate, ball means interposed betweenthe cup and the plate, and pintle means for swivably securing the barmidportion to the load supporting member and mounted in the respectiveand aligned apertures thereof.

4. In a heavy duty caster, the combination of an apertured loadsupporting member, a centrally apertured plate member therebeneath, ametal plate member therebeneath and in spaced relation thereto, one ofsaid members having a peripheral flange concentrically arranged anddirected toward the other member, antifriction means between the platemembers and retained by the ange, a yoke including a flat centralportion centrally apertured and suitably secured to the lowermost platemember, a spacing sleeve between the load supporting member and theyoke, pintle means positioned in the aperture of the load supportingmember and in the sleeve for swivably securing the load and supportingmember together with the anti-friction means ineluded therebetween,another sleeve included within the yoke aperture and interposed betweenthe yoke and the first mentioned sleeve, and

other anti-triction means between said sleeves and positioned in theplane of the yoke, said sleeves retaining said second mentionedantifriction means and said second mentioned sleeve being retained bysaid pintle means.

WILLIAM H. SIPPEL.

